What was accomplished

amp story page attachment

• CTA tab-able inline CTA #37933

video cache

• ✨ Append captions track from cache response #37893

Story localization

• ✨ Fetch strings for localization files if in experiment #37843
• ✨ Localize system layer async #37870

Story performance

• 🚀 Remove FOUT on font loading of amp-story-education #37928
• 🚀 Remove CLS from system layer when adding buttons #37929
• 🚀 Set disabled animation on first page to 1 #37157

Observable

• ✨ Make observable safe to remove handler while firing. #37887

Story system-layer

• 🚮 Removing unused storyHasAudio state property #37220

amp story shopping

• Remove multi line border radius code #37808
• ✨ Change productBrand to productVendor and make it optional #37897

What's next

• Launch amp-story-shopping (analytics, validation & documentation)
• amp-story-captions (customizable CSS with smart default, automatically use amp-story-captions component)